Published as 『The Royal Family Chronicles of Anshesze 3: The Unconventional Princess's Marriage Circumstances』.

Despite his ducal lineage, Yell is rather plain and unremarkable. Scorned by his father and stepmother, and on the verge of disinheritance, Yell's maternal grandfather arranged a marriage with Mariage (eight years old), the First Princess of the great nation of Anshesze.

This work is a companion piece to the short story, 『Monologue of a Former Princess with Commoner's Blood』.

As the series' cast of characters grew, 『Characters and Others』 has been added to the series.